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Posted by / 02-Jun-2020 02:04

Who is turtle dating

The largest known turtle, , a genus of sea turtles that lived during the Late Cretaceous, reached a length of about 3.5 metres (12 feet).

The Anapsida is thought to have been ancestral to the Pleurodira (side-necked turtles) and Cryptodira (hidden necks), had their origins some 230 million years ago during the Triassic Period (251.9 million to 201.3 million years ago) at the latest, making turtles an extremely ancient group.The scientists were able to estimate each turtle's approximate age by comparing the bomb-testing radiocarbon accumulated in its shell to background rates of bomb-testing radiocarbon deposited in Hawaii's corals.Levels of carbon-14 increased rapidly in the biosphere from the mid-1950s to about 1970 as a result of Cold War-era nuclear tests but have dropped at predictable rates since then, allowing scientists to determine the age of an organism based on its carbon-14 content.Our editors will review what you’ve submitted and determine whether to revise the article.Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work!

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The earliest turtles known date to the Late Permian Epoch (the Permian Period lasted from 298.9 million to about 251.9 million years ago).

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